Most any will work, although the top will need to be modded slightly. The one I've seen used most often was by CCM because it was for pumps so it didn't have a hole for the timing rod. Unfortunately those are discontinued, but you may be able to get them to sell you one they use on T2s.

I'll also mention that MorueM has made several that look very nice and would need no modification. He may still have a few left but you'd have to check with him.

Pre2k cocker vASA can be used without modification, but there will be a small space since pre2k cocker bodies had square edges, while the EvilM bodies have 1/8" radiuses on the bottom edges.
2k+ vASA will need the radiuses recut to 1/8", they are bigger and won't fit.
I did mod some 2k+ to fit, and I also made a couple style vASA to fit the EvilM bodies, like Skinny said.